deezell wrote: » Apologies, I didn't open the 2nd image. Very easy job, just mount two Tado stats in place of the sunvics. Switch their mechanical zone timers to always on, and continue using the HW mechanical timer for HW timing. If you want HW timing on the app also, add in the extension kit and mount and wire it in place of the HW mechanical timer. Nest replacement a bit fiddlier, but basically requires 2 nest kits, with their heatlink boxes replacing all three mechanical timers, and the two nest wall stats being either wirelessly connected to their respective heatlinks or wired to them by reusing the redundant cable from the sunvics. The latter allows the Nests to be powered at low voltage from the heatlinks. The wireless option means the nests can be positioned anywhere in a zone but requires power from a little phone style charger.
cellboy wrote: » Thanks for your reply deezell! I've sent this same info to TADO website, they replied me that they cannot support 3 zones and in this case, I'll have to lose the HW function... Anyway, to answer your question - I have one box with 3 channels lights, so I presume this is the receiver box of those stats and programmer. The programmer for the hw is also wireless and it has the cable connected to the temperature sensor which is attached on the cylinder. Which system do you think will suit my setup more? Thanks again!
VUDuo2 wrote: » crikey, that's great news and many many thanks for taking the time to reply. To be sure to be sure though, I've attached pics of two trvs, would a numpty like me be able to replace them with the eBay type, or should I have a pro do it?
deezell wrote: » Juts to add, this is the operation manual for the first one you listed;https://www.google.ie/url?sa=t&source=web&rct=j&url=https://www.eq-3.de/Downloads/eq3/downloads_produktkatalog/eqiva/bda/CC-RT-O-CnL-W-R5-2_EQ_UM_GEFD_web.pdf&ved=2ahUKEwj5rcfO0u7dAhXMIMAKHfJ6B_4QFjAAegQIBRAB&usg=AOvVaw3_MD5wDMViilWnHWLiexI- It's a very versatile device. Three events per day, but you can set the temperature individually for the events, and also for the off period, so assuming your boiler fires during this period, the TRVs will allow reduced adjustable temperature of the rooms, not just fully off. Sounds ideal for your needs.
deezell wrote: » Tado can control your system. A tado stat with ext kit can wirelessy replace one stat and HW control. A second Tado stat will replace the second Danfoss, but would need to be wired in place of this stat's receiver. Im assuming all receivers are in the same place. To make both tado stats wireless would require a second tado extension kit. Tado support would advise on configuration of a two stat two ext kit install. You could also achieve the same with 2 Nest kits, Nests come with a wireless 'heatlink' box, which also have a HW relay. Two of these will directly replace your Danfoss receivers (are these part of the programmer?), the Nest stats can then be located anywhere in the zones and are powered by a small phone style adaptor
VUDuo2 wrote: » I got a Nest thermostat v3 via Electric Ireland a few days ago, which connects to my Nest Protect smoke / carbon alarm. Supposedly, if the Protect detects smoke it links with the Nest Thermostat to turn off the heating. I've a combi boiler, so the nest controls just the heating. I'd like some "control" of the upstairs radiators, but I don't want / can't afford a 2nd Nest. The reviews of Energenie Trv's, aren’t great even though they apparently "work with nest". But working with Nest is not necessary anyway. I just want to set when the upstairs radiators turn on /off (morning / evening), no need for remote access / IFTTT compatibility etc. So would either of the following do or is there others you might recommend;eBay orthese
kaisersose77 wrote: » Sorry if I'm misinterpreting what you are asking, i'm not in the house at the moment but there was one of those sunvic tlm's in one upstairs bedroom and another in the living room downstairs.
deezell wrote: » Are there wall stats in the ch zones?
deezell wrote: » That hot press switch could be for an electric immersion element? You'll have to find out if your system can heat the HW from the boiler without the CH being on. Once you've figured this, and which switches achieve this, your halfway there to getting a nest to control this. Nest comes with a relay box, the 'heatlink' box, which is wired or wireless to the stat. It has HW and CH relays, and can control a two zone HW/CH installion, whither zone valved or pumped. There's a little extra wiring involved if only pumps are used to heat the radiators, as you will need to fire the boiler for HW only from the HW relay, and this cant be cross connected to the CH relay as it would just turn on the CH pump. I adressed this a few posts ago in an answer to Gally74.
OffalyMedic wrote: » Only moved in in mid april so until this week we didnt have much use for heating so sorry in advance for my lack of knowledge. This first picture is our timer which we normally just slide to timer/ on/ off. the switch beside it seems to turn it on or off also? Unfortunatly our manifolds are on the ground behind a corner kitchen cupboard. the back of the cupboard is removable if we even need to access manifolds but it'll be a tight squeeze. Do they need to assess manifold when installing Nest? This final picture is a switch in the hot press which stays on constantly even when timer/switch in kitchen is off. I think its for hot water?
cellboy wrote: » Hi, I'm looking for replacing my existing 3 zone Danfoss heating system with Nest or Hive or something else which has more smarter functions. Zone 1: Downstairs heating, controlled by Danfoss wireless thermostat Zone 2: Upstairs heating, controlled by Danfoss wireless thermostat Zone 3: Hot water, controlled by Danfoss wireless programmer There are two main reasons that I need to upgrade - 1. Smart functions, like turn it/off when arrive/leave the house. 2. The wireless programmer to control the hot water having some issues, it's easy to turn/switch it on, but I have to turn/switch it off for many times before it can be really off. I cannot program it as it will not turn/switch the boiler off. I was thinking to get a Tado system, but it looks it can only take 2 zones, I would like to have the hot water as a separate zone. could you pls recommend a solution for me? Thanks a lot!
deezell wrote: » Sounds like a single CH zone and a seperate HW zone. Nest is suitable for this. Post a few pics of switches, timer, manifold, pumps you can see. Manifolds to rads are usually seperately pumped, with the HW cylinder heated by the pumped flow from the boiler.
deezell wrote: » If you know where the stat wires are you can uncover them. I presume they're on a wall maybe under the plaster? The wires would be joined together ti keep the zone on, disconnecting them should turn that zone off. Once you've established this, its just a job of inserting any wall stat, manual or smart, in series with the circuit. If its a smart stat ypu can let it take over timing function and set to old timer to always on for that zone. With Tado or Netatmo or other brands its a simple fit, but the stat is normally switching 220v live mains, so care is needed to make sure all is turned off before fitting. You can repeat this for the second zone, if you want smart HW timing you can add the extension box, which switches the HW zone signal from your old timer.
The Bouncer wrote: » Thanks a million would I need a sparks to do this? I know where the stats are cabled too but after that a bit of a loss.
deezell wrote: » You can install a tado (or any stat with switched contacts) into a zoned timer controlled system. You just connect the stat contacts in series ( in line) with the output from the existing timer to its zone valve, situating the stat somewhere in the zone. Aa a tado stat controls both timing and temperature of its zone, you can set the original zone timer for that zone to always on. Each CH zones requires its own tado stat, you can always do just one if you want and leave the other on the old timer. If you want to control HW timing with tado, you add the extension kit, which controls one CH zone and a HW timed zone. If you get a second stat for the other CH zone you can remove the eziprog altogether.
OffalyMedic wrote: » Thinking about getting a nest installed. We recently renovated an old cottage but on a budget so the replumbing of the house was done by family and I'm not sure if it'll be up to scratch for nest to be installed. Hopefully someone here can help me. We got a new boiler, kept the old cylinder, put in new manifolds and every radiator is ran independently from the manifolds to the rads and same with the hot water to taps I think. We have a timer clock with a wall switch and another switch which I think turns on hot water alone but not sure! Is this zoned heating so with regards nest? Sorry I can't be more percise!
deezell wrote: » From your description it looks like you have a pumped zoned system, rather than motorised zone valves. HW is always heated when the boiler is on, with CH zones being switched on and off manually from the two switches. The whole thing is timed by a single timer, and you can have HW only, or HW with any combination of zones. The small mixing or neutralising tank is supplied from the boiler, and from here heated water is pumped to either zone. The flow of heated water to the HW cylinder is either by gravity from this mixer tank or as part of the boiler pumped circuit to the mixer tank. You can replace the switches with thermostats, suitably located, and if you use smart stats you will have timing and temperature control of each zone. You will also want timed control of HW so you can have HW when neither of the CH zones are active during the summer. Two ordinary wall stats and a 3 zone timer would be the simplest automated non smart solution. Using Tado, two smart tado stats and an extension kit is required for 2 CH and 1 HW zone, but here's where it gets tricky. A pumped zoned system with HW must call the boiler in four different cases, HW only, or HW plus any of the CH zone combinations, 1 , 2, or 1 and 2. In a simple 3 zone timer system with CH stats, the on state for each zone is used to turn on the pump for that zone, while the on state for HW is used only to fire the boiler, resulting in just HW. In order for the CH zones to call the boiler, you must install a relay box which will combine all 3 calls into one to call the boiler. You can't just connect all three zone output live wires together, as then both pumps will come on for any zone as they would connected to all the timer/ stat outputs feeding the pumps. A pumped system differs from a motorised zone valve system in that the zone valves have built in relays to call the boiler once the valve is open, and numerous valve relay contacts can be combined without one zone turning on the other. In a zone valve system the live from any stat or timer is only used to open the valve, not to fire the boiler. The combined lives from the zone valve relays does this. Pumps dont have relays, hence you must add a relay box Having said this, I'm very aware of the fact that Tado stats in particular can be programmed by support to cross control each other and the extension box relay. It is feasible that an installation with 2 stats and an extension box could be wired such that either stat would close the CH relay contacts on the ext kit and this could be used to fire the boiler, while the contacts on the actual stats could be used to operate their repective zone pumps. For HW, the other HW timed contacts of the ext kit would be combined to also fire the boiler. A previous poster who installed two tado stats noted that either stat was closing his ext kit CH contacts and he had to get tado support to separate their function as he had a zone valve system, so it should be possible to rig it this way almost by default, and without an additional relay box. Check your system to see how the mixer box is plumbed, and how the HW cylinder is connected to same, post a few pics maybe. I hope the above isn't too confusing, but pumped systems do normally require a relay box, and they are very useful for making the wiring of multi zone systems easy, even valve sytems. Heres an image of a 4 zone box
kaisersose77 wrote: » I'm purchasing a house off a family member and am interested in getting a tado or nest installed. I have attached photos of the current setup. Can anyone confirm if there would be any issues in replacing the thermostats going by what you see?
gally74 wrote: » Hello, Im looking for some help trying to get a good system for the following Left hand switch, down stairs (switches on a pump connected to a small mixing tank) Right hand switch, Up stairs (switches on a pump connecting to a mixing tank) Clock, heating on/off inc hot water, pic to follow, Appreciate any help,https://drive.google.com/file/d/0BwP87NcFL3KdYi1ob2tmVkotOE9MNllfVnNYdHpfa2FJVGIw/view?usp=sharing
The Bouncer wrote: » Hi folks I saw a post from deezell from January that mentioned the eziprog 3, I have one of these with Upstairs, downstairs and hw zones. Wired for thermostat but none installed as I bought a tado but got this from their support team "Sadly the Eziprog 3 can not be replaced by tado° since it is connected via a triple relay and tado° can only connect to dual or single relays or digital connections. But you could use tado° as single relay room thermostat. Thank you and kind regards," Is this true or can I use them? Right now just operating on boiler thermostat and mechanical rad thermos.. Cheers
deezell wrote: » Best of luck in your endeavours, if you have gas, a gas boiler install will be cheaper, tho running costs might be more. I don't save oil with my new boiler and tado, instead I have round the clock comfort for the same consumption as my previous on/off heating regime. The Boards' community is the place to go whatever your next project is. Cheers!
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